TWM457198U - Touch display panel - Google Patents

Abstract

A touch display panel comprises a first substrate, a liquid crystal layer, and a second substrate from top to the bottom, wherein the first substrate top-down comprises a first surface and a second surface. The second substrate top-down comprises a third surface and a fourth surface. There are multiple segment lines on the second surface and multiple common lines on the third surface. Furthermore, the number of the segment lines is larger than that of the common lines. Thus, the second surface can offer more touch positions. This present disclosure has more touch position by inverting the original upper and down surface of the traditional touch display panel.

Description

Touch display panel

This creation is related to a display panel, especially a touch display panel.

In today's market of various consumer electronic products, portable electronic products such as personal digital assistants (PDAs) and notebooks, and even personal computers and digital home appliances systems have gradually used touch panels ( Touch panel) is a data communication interface tool between the user and the electronic device. When using the touch panel, the user can directly operate and release commands through the objects displayed on the screen, thereby providing a more user-friendly operation interface. In addition, the design of electronic products is light, thin, short and small, so the display device with touch panel has gradually become a key component of various electronic products.

According to the structure, the conventional touch display device can be divided into an external touch display device and an in-cell touch display device. In addition to a display panel, the external touch display device needs to be additionally provided with a separate touch panel on the display surface of the display panel. Therefore, the user can observe the image displayed by the display panel by using the touch panel. To sense its touch position. The in-cell touch display device integrates the touch function into the display panel, and uses the same panel to have both input and output functions, which can reduce the overall thickness of the touch display device, and is one of the mainstream of the current touch display panel.

However, the conventional touch display panel usually has a smaller number of common lines arranged on the upper panel, and a larger number of segment lines arranged on the lower panel, thereby causing touch analysis of the upper panel. Lower degree Or fewer touch points.

Please refer to FIG. 1 , which is a conventional touch display panel structure. As shown in Fig. 1, the second substrate 13', the liquid crystal layer 12', and the first substrate 11' are sequentially included from top to bottom. The second substrate 13' has a third surface 130', a fourth surface 131', the first substrate 11' has a first surface 110', a second surface 111', and the third surface 130' of the second substrate 13' Facing the second surface 111' of the first substrate 11'. The third surface 130' is provided with a plurality of common lines 142', and the plurality of scan lines are coupled to an integrated circuit 14'; the second surface 111' is also provided with a plurality of segment lines. 141', and the data lines are all coupled to an integrated circuit 14'. Because the third surface 130' needs to provide a touch function, each of the second display patterns of the third surface 130' needs to be coupled to a scan line 142' so as to detect the electrical characteristics of the scan line 142'. The change, or the change in electrical characteristics between the scan line 142' and the data line 141', detects the touch position, and the data line 141' disposed on the second surface 111' only needs to provide a corresponding line with the scan line 142'. The voltage is compared, so the first display pattern on the second surface 111' does not need to be coupled to a data line as each of the first display patterns.

However, in the conventional touch display panel, the number of scan lines 142 disposed on the third surface 130 is generally smaller than the number of data lines 141 disposed on the second surface 111, that is, the conventional touch display panel can sense. The number of blocks will be limited by the number of scan lines 142 of the third surface 130, which may cause the problem that the touch points are sparse.

In view of this, the present invention proposes a touch display panel to change the arrangement of the upper and lower panels of the conventional touch display panel, thereby solving the foregoing The number of scan lines of the board is too small, which causes the problem of the touch resolution or the touch point is not high.

The present invention provides a touch display panel that includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate has opposite first and second surfaces, wherein the second surface is provided with a plurality of data lines, and each of the plurality of data lines is connected to the at least one first display pattern. The second substrate is disposed under the first substrate, the second substrate has opposite third and fourth surfaces, and the third surface faces the second surface, wherein the third surface is provided with a plurality of scan lines, and The scan line connects at least one second display pattern, and the number of data lines is greater than the number of scan lines. The liquid crystal layer is filled in a space formed by the first substrate and the second substrate, wherein the first display pattern is located on the second surface, and the second display pattern is located on the third surface.

According to an embodiment of the present invention, the data line and the scan line are both coupled to the integrated circuit.

According to an embodiment of the present invention, the integrated circuit has a switch inside.

According to an embodiment of the present invention, the integrated circuit can be switched into a driving mode or a touch mode through the switch.

According to an embodiment of the invention, the plurality of data lines do not intersect each other.

According to an embodiment of the invention, the plurality of scan lines do not intersect each other.

According to an embodiment of the present invention, the liquid crystal layer is a super twisted nematic or twisted nematic liquid crystal layer.

According to an embodiment of the present invention, the first display pattern corresponds to the second display pattern.

In the touch display panel of the present invention, since the upper panel is provided with a large number of segment lines, the disclosure can fully utilize a large number of data lines without affecting the original process and wiring mode. Improve the touch resolution or touch point of the touch display panel.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. The present inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this description will be thorough and complete, and the scope of the inventive concept will be fully conveyed by those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Similar numbers always indicate similar components.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, such elements are not limited by the terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be termed a second element without departing from the teachings of the novel. As used herein, the term "and/or" includes any of the associated listed items and all combinations of one or more.

[Embodiment of Touch Display Panel]

The touch display panel provided by the present invention inverts the original upper and lower panel structures of the conventional touch display panel, and comprises a first substrate, a liquid crystal layer, a second substrate, an integrated circuit, and a plurality of data lines. , a plurality of scan lines. Further, the present invention is provided by inverting the original upper and lower panels of the conventional touch display panel to provide a touch function. The board can have more data lines, thereby improving the resolution of the touch display panel with respect to the touch function.

Please refer to FIG. 2 and FIG. 3 simultaneously. FIG. 2 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention. 3 is a schematic view showing the structure of a touch display panel according to an embodiment of the present invention. As shown in FIG. 2 and FIG. 3, the touch display panel 1 of the present embodiment includes a first substrate 11 (the original lower panel of the prior art), a liquid crystal layer 12, and a second layer from top to bottom. The substrate 13 (the original upper panel of the prior art), wherein the first substrate 11 includes a first surface 110 and a second surface 111 from top to bottom, and the second substrate 13 includes a third from top to bottom. The surface 130 and a fourth surface 131. The touch display panel 1 of the present embodiment further includes an integration circuit 14, and a plurality of segment lines 141 are disposed on the second surface 111, and a plurality of scan lines are disposed on the third surface 130. The data line 141 and the scan line 142 are both coupled to the integrated circuit 14. It is to be noted that the number of the data line 141 of the touch display panel 1 in this embodiment is greater than the number of the common line 142, thereby improving the touch function of the touch display panel. Degree or touch point.

The second surface 111 has a plurality of first display patterns, and the first display patterns may be different patterns (or patterns representing different functional symbols). It should be noted that each of the first display patterns is It needs to be coupled to a data line 141. The third surface 130 also has a plurality of second display patterns, and the second display patterns may be different patterns (or patterns representing different functional symbols), and each of the second display patterns is It is necessary to have a one-to-one correspondence with the first display pattern described above. In other words, the first display pattern and the second display pattern must have the same shape, size, and corresponding position in one-to-one correspondence, wherein the present embodiment is convenient for explaining the disclosure. The first display pattern of one heart type and the corresponding second display pattern are described as Fan Li. As shown in FIG. 3, when the user touches the first display pattern of the heart type, the touch display panel 1 can utilize the electrical characteristic change of the detection data line 141' or between the data line 141' and the scan line 142'. The electrical characteristics are changed to know the touch position. In short, when the finger touches the first display pattern, the electrical characteristics of the data line of the second surface 111 of the touch display panel change, and the touch position of the user's finger can be known.

In one embodiment, the data line 141 and the scan line 142 are both coupled to the integrated circuit 14, and each of the plurality of data lines 141 is further coupled to a switch in the integrated circuit 14, and the switch can be integrated. The circuit 14 or the touch display panel 1 is switched between the driving mode and the touch mode. Further, each time a switching cycle occurs, the switching switch switches the integrated circuit 14 or the touch display panel 1 from the display mode to the touch mode or from the touch mode to the display mode, wherein the switching period (ie, the switching frequency) can be It is further set by the designer according to the actual application requirements. When the integrated circuit 14 or the touch display panel 1 is in the touch mode, the integrated circuit 14 detects the change in the electrical characteristics of the detected data line 141 ′ or the electrical characteristic change between the data line 141 ′ and the scan line 142 ′ This is to know if touch occurs and where the touch occurs.

The structure of the liquid crystal display panel of the present disclosure is formed by inverting the upper panel and the lower panel of the conventional display panel, that is, the upper panel of the present disclosure is provided with a larger number of segment lines 141, and The lower board is a set of fewer common lines 142. Because the upper panel is where the touch occurs, that is, the upper panel is a panel that is in contact with an external force, each of the first display patterns of the upper panel needs to be coupled to a segment line 141 to be clearly defined and separated. Each first display pattern The function. The lower panel only provides a fixed voltage value, so that the second display pattern of the lower panel does not need to be coupled to the common line 142 for each pattern. In another embodiment, the lower panel can be divided into a plurality of regions, each of which is connected to a common line 142.

In summary, the first substrate 11 (ie, the upper panel) of the present disclosure is provided with a larger number of segment lines 141 than the scan lines of the second substrate 13 (ie, the lower panel), and thus the disclosure content The touch display panel can provide more touch positions without increasing the circuit manufacturing cost to improve the resolution or touch point of the touch display panel with respect to the touch function.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the patent of the present invention.

1, 1'‧‧‧ LCD panel

11, 11'‧‧‧ first substrate

12, 12'‧‧‧ liquid crystal layer

13, 13'‧‧‧ second substrate

14, 14' ‧ ‧ integrated circuit

110, 110’‧‧‧ first surface

111, 111'‧‧‧ second surface

130, 130'‧‧‧ third surface

131, 131'‧‧‧ fourth surface

141, 141’‧‧‧ data lines

142, 142’‧‧‧ scan lines

The specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, in which: FIG. 1 is a conventional touch display panel structure.

2 is a schematic structural view of a touch display panel according to an embodiment of the present invention.

3 is a schematic view showing the structure of a touch display panel according to an embodiment of the present invention.

11‧‧‧First substrate

12‧‧‧Liquid layer

13‧‧‧second substrate

14‧‧‧Integrated circuit

110‧‧‧ first surface

111‧‧‧ second surface

130‧‧‧ third surface

131‧‧‧Fourth surface

141‧‧‧Data line

142‧‧‧ scan line

Claims (8)

A touch display panel includes: a first substrate having an opposite first surface and a second surface, wherein the second surface is provided with a plurality of data lines, and each of the data lines is connected And at least one first display pattern; a second substrate disposed under the first substrate, the second substrate has an opposite third surface and a fourth surface, and the third surface faces the second surface The third surface is provided with a plurality of scanning lines, and the scanning lines are connected to at least one second display pattern; and a liquid crystal layer is filled in a space formed by the first substrate and the second substrate; wherein the data line The number of the scan lines is greater than the number of scan lines, the first display pattern is located on the second surface, and the second display pattern is located on the third surface. The touch display panel of claim 1, wherein the data line and the scan line are coupled to an integrated circuit. The touch display panel of claim 2, wherein the integrated circuit has a switch inside. The touch display panel of claim 3, wherein the integrated circuit is switched to a driving mode or a touch mode by the switching switch. The touch display panel of claim 1, wherein the plurality of data lines do not intersect each other. The touch display panel of claim 1, wherein the plurality of scan lines do not intersect each other. The touch display panel of claim 1, wherein the liquid crystal layer is a super twisted nematic or twisted nematic liquid crystal layer. The touch display panel of claim 1, wherein the first display pattern corresponds to the second display pattern.